These two fields are visible under every user avatar in the Forum, and these aren't simply for bragging rights.
They are there to let everybody know what type of Hardware you have and this really lets experienced users help you quickly.
For example, some Ports and Wrappers have difficulties with certain ATI Graphic Chips.

Moving on, let's say you can't run a Port. Now what do you do?

- Read through the Port's description in it's topic and read through the comments. Maybe someone else had a similar error and posted what fixed it.

- If that's not working, Search! I mean it, we have a great search option!

- If search doesn't come up with anything, look at the Ask for Help! section.

- If all else fails, make a new topic in the Topics in the Ask for Help! section.

This is how it should not be done:

No one can help you with this little information.

Here's how it should be done:

A little more detailed Description like this will help greatly.
If you filled out the Graphics Card and OS fields in your User control Panel, you don't need to write in what type of mac you have.